Youth in Revolt(2009) [Jerry]: Dies (off-screen) of a heart attack; we learn of his death afterwards in Michael Cera's narration, after Ray Liotta comes to inform Michael and Jean Smart. (Thanks to Tobias and Tommy)

Operation: Endgame(2010) [Hermit]: Stabbed in the chest during a confrontation with Odette Yustman; he's still alive when we last see him, so it's unclear whether the wound is fatal or whether he's killed in the subsequent explosion when the headquarters is blown up.